Improvement in lubricators



UNITED? STATES' PATENT OFFICE.

JOHN J. RENCHARD AND J. VINCENT RENOHARD, OF DETROIT, MICHIGAN.

IMPROVEMENT IN LUBRICATORS.

Specification forming part of Letters Patent No. 184,426,- dated November 14, 1876; application filed August 5, 1876.

To all whom it may concern:

Be it known that we, JOHN J. RENGHARD and J. VINCENT RENCHARD, of Detroit, in the county of Wayne and State ot' Michigan, have invented an Improved Lubricator, of which the following is a specification:

Our invention relates to an improvement in devices for coupling the lubricator to the The stem of the reservoir is screwed onto the top of a horizontal trunk, B, in which there is an angular passage, b,-communicating with the stem of the reservoir, tov conduct water from the latter into an oil-cup, C, suspended under the outer end of the trunk. The outer end ofthe passage b forms a seat for a compression-valve, b', horizontally tapped through the end of the trunk. Into an en larged continuation of the passage is tapped the upper and longerleg of an inverted Siphontube, c, whose short leg terminates near the top of the cup, and close to the side thereof Y usuallyT observed. d is a screw-plug tapped into a filling-hole cored in the top of the trunk, at the outer end thereof. The tube c passes up in the middle of the lower part of this filling-hole.

The cup G is a cylinder of thick glass, fitted between two anged heads, G1 (l2, the former being screwed onto a boss on the under side of the trunk. On its under side is cast a crab, e, into the center of which is tapped a centerbolt, f, which clamps the cylinder G between the two heads. The lower part of the bolt f has a cross-passage, '5, drilled in it, to draw off the water, which passage is closed at the lower end by a wing-valve, g, which is seated by a wheel-nut, h, screwed onto the lower end d of the center-bolt. The trunk has a feedpassage, k, drilled in it, communicating with the iilling-hole.

It' the lubricator is used for supplying a journal-bearing with oil, a tube is connected with the passage k, for conveying the oil thereto.

To operate it, the valve b is closed, and the reservoir A is to be filled with water. Any water in the cup C is then emptied, (through the valve g,) and the cup filled with oil by unscrewing the plug d, which is thenV to be replaced. The feed of the oil is regulated by the valve b', which can be adjusted so as to allow water to ilow from the reservoir in to the cup, drop by drop, at long or short intervals, to displace an equal volume of' oil through the feed-passage la. The water drops from the siphon c close to the wall of the cup, and each drop of water is clearly visible as it settles down through the oil into the bottom of the cup.

One of the advantages of having the tube c of the form shown (an inverted Siphon) is as follows: It the tube were straight, the water, in its descent, would press up the oil, which is of less specific gravity, and the water and oil would thus gradually change places; but, by making it in the shape of an inverted siphon, and being always full of water, the oil cannot force its Way down through the short leg, and hence takes another outlet. For the same reason, oating impurities or solid substances in the oil are excluded by this waterseal from rising up to get between the valve b and its seat, and thus derange the feed of the cup.

The illing-plug at the top of the reservoir l should be loosened enough to let the pressure of the atmosphere come upon the water; otherwise, when the said reservoir is partly emptied, a vacuum would form therein, and the water would cease to flow out.

If the lubricator is to be attached to the steam-pipe of an engine, a continuation, B1, ofthe trunk is provided, having its outer end saddle-shaped to it the pipe. By means of the union-coupling B2, the main trunk Bis coupled with the continuation B1, which is provided with two compression-valves, D D', the former on its upper, and the latter in its under surface, both closing, like plugs, into sockets in the body thereof. Next the saddle, a passage, Z, istrausversely cored in the body B1, to pass a-stirrup, E, through, so that it may be used to clamp the body to the side of the steam-pipe l?. A passage, 7c', isl drilled through the body-B, on a downward incline, toconnect at its upper end with the coincidentJ feed-passage 7c. The passage k may be closed by the valve D'. drilled, on an upward inclination, through the upper part ot' the body B1, and a continuation thereof is drilled in the main trunk B, from which, by a tube, m2, is carried up into the top of the reservoir A, where it terminates in a minute aperture. The passage m1 may be closed at will by the valve D.

The saddle is packed by two soft copper rings, one surrounding the mouth ol' each passage, m1 or 7c', which rings are compressed between the saddle and pipe when the former `is forced against the latter under the pressure the drill far enough to close the valve D. Withdraw the drill, .turn the plate half-way around, and insert the drill in the lower pas- A simllar passage,m1,1s

sage. Drill the second hole in the pipe, re-

tract the drill far enough to close the valve D'; then detach the plate andcouple on the lubricator-trunk, and open the valves D D' and4 b,"when the feeding of the oil will begin.

The purpose ot' the passage mlm and tube m2 is to prevent the formation ot'a vacuum iu the reservoir as the Water flows out, by keeping up a pressure therein equal to the backpressure in the cup. l

What we claim as our invention is- 1. The trunk continuation B1, provided with the passages llt m1, valves D D', and coupling B2, for connecting the trunk B therewith, and adapted to be clamped to the side of a steam -pipe by means of a stirrup, substantially as described;

2. [n a displacement-lubricator, substan-4 tially as described, the combination of the elevated water reservoir `A, the trunk B, the suspended oilcup O, the passages b 7a, and the extension B1, provided with valves D D and passages lk m1, constructed and arranged substantially as described and shown.

3. In a displacement-lubricator, substantially as described, the combination, with the elevated water reservoir and suspended oilcup, of the inverted Siphon-tube c, through which the water passes into the said oil-cup, substantially as described and shown.

'JOHN J. RENGHARD.

J. VINCENT RENOHARD. Witnesses:

H. S. SPRAGUE, EDWARD BARTHEL. 

